This machined aluminum adapter fitting has a 3/8 BSP female port for connecting the temperature sensor bulb from our Racetech mechanical gauges (or for any other application that requires a 3/8 BSP port). The beaded nipple at each end is sized to fit a 1 3/16" silicone coolant hose. The 30mm size will also fit both 28mm (1 1/8") and 32mm (1 1/4") hose sizes.
Note: Make sure that the end of the temperature sensing bulb does not touch the opposite side of the adapter! The maximum allowable sensor bulb length is 1 1/8" (measured from the flat port face). It may be necessary to mill or drill a relief into the fitting opposite of the tapped hole if your sensing bulb is longer.